A Fully Integrated Battery-Connected Switched-Capacitor 4:1 Voltage Regulator with 70% Peak Efficiency Using Bottom-Plate Charge Recycling

被引：0

作者：

Tong, Tao ^{[1
]}

Zhang, Xuan ^{[1
]}

Kim, Wonyoung ^{[1
]}

Brooks, David ^{[1
]}

Wei, Gu-Yeon ^{[1
]}

机构：

[1] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA

来源：

2013 IEEE CUSTOM INTEGRATED CIRCUITS CONFERENCE (CICC) | 2013年

关键词：

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This work presents a switched-capacitor (SC) DC-DC voltage regulator that converts a 3.7V battery voltage down to similar to 0.8V in order to power the 'brain' SoC of a flapping-wing microrobotic bee. A cascade of two 2:1 SC converters offers high efficiency for a 4:1 conversion ratio. A charge recycling technique reduces the flying capacitor's bottom-plate parasitic loss by 50% and overall conversion efficiency reaches 70%. The output droop is less than 10% of the nominal output voltage for a worst-case 47mA load step.

引用

页数：4

共 10 条

[1] High-Efficiency Fully Integrated Switched-Capacitor Voltage Regulator for Battery-Connected Applications in Low-Breakdown Process Technologies
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IEEE TRANSACTIONS ON POWER ELECTRONICS, 2018, 33 (08) : 6858 - 6868
[2] A Sub-ns Response Fully Integrated Battery-Connected Switched-Capacitor Voltage Regulator Delivering 0.19W/mm2 at 73% Efficiency
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[3] General Top/Bottom-Plate Charge Recycling Technique for Integrated Switched Capacitor DC-DC Converters
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[4] Fully Integrated High Voltage Pulse Driver Using Switched-Capacitor Voltage Multiplier and Synchronous Charge Compensation in 65-nm CMOS
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[6] A Fully-Integrated Switched-Capacitor 2:1 Voltage Converter with Regulation Capability and 90% Efficiency at 2.3A/mm2
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[7] A 4V-0.55V Input Fully Integrated Switched-Capacitor Converter Enabling Dynamic Voltage Domain Stacking and Achieving 80.1% Average Efficiency
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[8] A 94.6%-Efficiency Fully Integrated Switched-Capacitor DC-DC Converter in Baseline 40nm CMOS Using Scalable Parasitic Charge Redistribution
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[9] A 500-A/48-to-1-V Switching Bus Converter: A Hybrid Switched-Capacitor Voltage Regulator with 94.7% Peak Efficiency and 464-W/in3 Power Density
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[10] A 1.1W/mm2-Power-Density 82%-Efficiency Fully Integrated 3:1 Switched-Capacitor DC-DC Converter in Baseline 28nm CMOS Using Stage Outphasing and Multiphase Soft-Charging
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